Frequency and Pitch

Source of Sound	Frequency Range (Hz)
Acoustic Guitar	82 to 880

Bass Guitar	41 to 300

Bass, Standup	41 to 261

Bass Guitar, 5 String, with Low B String	32 to 300

Bassoon	62 to 525

Clarinet	160 to 1750

Electric Guitar	82 to 1050

Flute	260 to 2600

French Horn	82 to 1000

Oboe	260 to 2600

Piccolo	525 to 4200

Pipe Organ	27 to 4200

Trumpet	160 to 1000

Tuba	45 to 240

Violin	200 to 3100
Middle C (C4), Hi-C (C6)	261.63, 1046.52 Hz
Octave around middle C (A3 - G4)	220-415.4
Piano A0 - C8	27.5-4186
Large Pipe Organ with 32 ft pipe	16-8,000

Source of Sound	Frequency Range (Hz)
Porpoise	7,000-120,000
Bat	10,000-120,000
Stereo	15-30,000
Dog whistle	20,000-24,000
Frog	50-8,000
Piano	30-4,100
Dog	450-1,800
Human	85-1,100
Vocal, Bass	40 to 900

Vocal, Tenor	130 to 1300

Vocal, Alto	175 to 1760

Vocal, Soprano	220 to 2100

Notes on a standard (88 key) piano

Each octave represents a doubling of frequencies.

Human Voice
Professional singers usually have a range of 3+ octives. Julie Andrews has a range of 4 octaves, from C3 below middle C to C7 above high C (some credit her with 5 octaves).

Note 1: Note numbering starts at C. e.g. C4 follows B3. A piano keyboard goes A0, B0, B0, C1, C1, D1, ...
Note 2: Concert pitch with A4 set to 440hz is modern. In other times and other places concert pitch may have been a different frequency, and usually a bit lower. The pitch of A440 has remained since 1939; pitches have risen a little, particularly in Eastern European countries, which often wish pianos to be tuned to A 444 or even a bit above.
Note 3: Each octave represents a doubling of frequencies.

Links:
See Frequency and Pitch in the Tech section for more